Name a metal of medium reactivity and write three main steps in the extraction of this metal from its sulphide ore.

Explanation

**Step-by-Step Solution:**

1. **Identify a Metal of Medium Reactivity:**
A suitable example of a metal of medium reactivity is **Zinc (Zn)**. Zinc is more reactive than metals like gold and silver but less reactive than metals like sodium and potassium.

2. **Step 1: Concentration of the Ore:**
The first step in the extraction of zinc from its sulfide ore (commonly sphalerite, ZnS) is to concentrate the ore. This is typically done using a process called **froth flotation**, where the ore is mixed with water and chemicals to create a froth that selectively separates the zinc sulfide from other minerals.

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